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Finding the Fourth Proportional to 157,145.96, 216,883.76 and 89,179.68

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Solution

The fourth proportional to 157,145.96, 216,883.76 and 89,179.68 is: 123,080.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,145.96 : 216,883.76 = 89,179.68 : x
  2. Step 2: Convert to fraction form
    157,145.96/216,883.76 = 89,179.68/x
  3. Step 3: Cross multiply
    157,145.96x = 216,883.76 × 89,179.68
  4. Step 4: Simplify right side
    157,145.96x = 19,341,624,314.00
  5. Step 5: Solve for x
    x = 19,341,624,314.00/157,145.96
  6. Step 6: Final answer
    x = 123,080.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.